Oh man, you have the "bitey vampire" glitch problem from Sims 2, where vampires constantly turn townies into vampires! Ugh! I think the game's AI is messed up.

Lola Belle in the Brdigeport I am playing(in my own Dynasty) is a vampire, so are half the Strikers and Johnny Jones, who invaded the lot! Yikes!
Is there some way we can figure out the rate at which townies are turned into vampires? (Sorry if I used that term, I mean non-played households.)
Anyways, nice to see that Carina and the other immortals are a band now. Sorry that Cinnamon's not interested in anyone. If you're worried about finding a mate, then what I suggest is to dump the whole "true love" thing and just grab the first man who is compatible. Since you don't need the man except as a father for the next immortal, it'd work best to find someone who isn't too ugly-looking. And you're right, something it's best just to hold off on career for a bit to get the next spouse married and the next generation bred. I focus on that first before career with my Sims.
BTW: Does Carina mean gray or salt-n-pepper in some foreign tongue? I'm sorry but I don't get what the name means. I know what nectarine(citrus orange), charteuse(yellow-green), and periwinkle(lilac blue) mean, but carina is a mystery.